Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1dc11a4cc797564…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 12:35:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5906d229b15930b39584dcf758fc2f82 SHA-1: 7dc07da99dc3728dcd07715a343ac09affed7759 SHA-256: d1dc11a4cc797564471c7f275a41dceb5060e16685106013cd0fb0db9cc52e8f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and generators. The primary redirector URL is http://netcdn.tw/app/406889139/kachifpro-game-hack. The document body and heuristics indicate a lure to download potentially unwanted or malicious content. No scripts were extracted, but the embedded URLs and redirection behavior are strong indicators of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/406889139/kachifpro-game-hack In PDF document text
    • http://pspmrsmbpulau.com/opac/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/cheats-for-apocalypse-rising-roblox_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/legit-free-robux-websites_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/free-robux-every-day_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/roblox-robux-hack-online-2021_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/free-t-shirt-model-roblox_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/hack-roblox-pc-sur-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/can-you-get-bloxburg-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/roblox-codes-for-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/inject-hack-com-roblox-robux_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/roblox-room-cheat-codes_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003160.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3160 23396 bytes
SHA-256: a52c21095e5732fd8464da308a410ade3bf58f780f983bf5a9b5d2942bcae20b
font_01_sfnt_off0000665c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665C 18072 bytes
SHA-256: 72a3da90a05afc5dc46f93167f9d09aeeb78081726754e710800ebd664932104

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